You recall the picture of the railroad track raised into a ladder to heaven? God gave the law to show us the route to heaven along which the engine of the Spirit would pull us if we were coupled to him by faith. But the Judaizers, and many religious people today who know nothing of living union with Christ, took the railroad track of the law and raised it up on end and turned it into a ladder on which they would climb up to heaven by their own moral initiative. Wherever that happens, you have legalism or, as Paul says, you have “works of the law.” – John Piper preaching on “Christ Redeemed Us from the Curse of the Law” from Galatians 3:10–14.